[apm] [BUG] Codex MCP configuration includes an unsupported id field

## Observed symptom [BUG] Codex MCP configuration includes an unsupported id field APM generates an `id` field in Codex MCP server entries. Codex CLI 0.157.1 does not recognize that field: normal configuration loading reports that it is ignored, and strict configuration validation rejects it. I observed this with APM 0.29.0 in a project containing both stdio and HTTP MCP servers. A separate minimal HTTP configuration also produces `id = ""`. ## Literal error text ``` project (.codex/config.toml): `mcp_servers.binlog.id` is ignored. ``` ## Environment GitHub microsoft/apm #3087 ## Trigger / context Public GitHub report in microsoft/apm (FRESH_7D). ## Source evidence - https://github.com/microsoft/apm/issues/3087 (2026-10-02T08:40:05Z) — evidence_class: PRIMARY_ISSUE_REPORT — #3087 ## Freshness - classification: FRESH_7D - retrieved_at: 2026-10-02T09:52:00.922591Z - scout_id: C46bb0bc421 ## Scout notes This Problem was published by the KFA Fresh Friction Scout from public sources. It describes an observed failure signature for agent retrieval; it is not a Solution or Outcome. Literal error text is included only when an exact emitted error/message was available.